Tread-power governor



(No-Model.)

` 2 shets-sheen 1. A C. SMALLE'Y..

TREAD POWER GOVERNOR.

No. 357,289'. Patented Feb. 8, 188'7.

. C i l IIAFI- Ill wiwi c o c a.

(No Model.) 2 Smetssheet 2.

C. C; SMALLEY.

TRBAD POWER GOVERNOR. Y p No. 357,239. Patented Peb. 8, 1887.

I y N gummi ihm I Syvum/L to z A UNITED YSTATES- PATENT OFFICE.

CLARENCE CHRISTIAN SMALLEY, OF MANITOVVOC, WISCONSIN.

TR'EAD-Pow-ER GOVERNOR.

.SPECIFICATION forming part of Letters Patent No. 357,239, dated February 8, 1887.

Application filed october T, Isso.

To all whom it' may concern: Y

Be it known that I, CLARENCE CHRISTIAN SMALLEY, a citizen of the United States, residing at Manitowoc, in the county of Manitowoc 5 and State of WVisccnsin, have invented certain new and useful Improvements in Tread-Power Governors; and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed I`c drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a side elevation of my improved governor, showing its appli- I cation to a tread-power; Fig. 2, an end view thereof, partly in section; Fig. 3, a sideeleva tion of the governor1 on an enlarged scale,'show ing the driving-shaft in section; and Fig.` 4, a' vertical section taken on line y y of Fig. 3.

The present invention has relation to certain new and useful improvements in governors for tread-powers, which are connected by belts to any desirable machinery that is to be operated, such asV feed cutters, grinders, corn- 2 5 shellers, wood-saws, and other like machines.

In this class of powers the ,speed under ordinary circumstances greatly varies, as for ,in' stance, in cutting feed or grinding grain,when the box of the cutter or grinder runs out of 3o material to operate upon, and in such case the want .of resistance is immediately felt by the horses in the power, and they change at once into a quicker walk, and then into a run, until the operator has either time to put on the brake or supply more material to the cutter or grinder. Such an incident is very common in operating an ordinary tread-power, and-is often the occasion of great damage to either the machine or the team, or both.

It is the objectof the invention to provide a simple and perfectly-operating governor, whereby the objections above named are removed,which I attain by the construction substantially as shown in theidrawings, and hereinafter described and claimed.

In the accompanyings drawings, Fig. 1, is shown one of many forms of tread-power to which my invention is applicable, said power consisting of the usual frame, A, and the endless belt composedf'of transverse parallel bars a, held or hinged together by meansl of toothed Serial No. 215,554. (No model.)

links inthe ordinary manner. The teeth of thelinks, as shown/at b, engage with the teeth ofa pinion, c, upon a driving-shaft, B, thelinks at the ends of the bars being connected together by shafts d, loosely passing through them, and provided at their extremities with flanged friction-rollers e, which run ou suitable tracks, f, as shown more clearly in Fig. 2, when the belt is forced around by the Weight of the horses or other animals walking thereon. To one end of the driving-shaft B is suitably connected a band-wheel,C,and from this wheel extends the driving-belt to any desirable Inachinery that is to be operated.

To the frame A is bolted or otherwise suitably att-ached a circular rim,D, which encireles the operating parts ofthe governor, the drlving-shaft forming the center of said rim, the latter having a smooth inner surface, the Width of which may vary in size, according as it is to be Vused for greater or less power.

A bracket,`E, which forms the main center piece ofthe governor, is fastened to the driving-shaft B by means of a key, set-screw, or otherwise, and is constructed with cored ends, as shown at g, to admit the supports F, said supports having pivoted to them the wooden blocks G. These blocks are heldin position by means of spiral or other suitable-springs, h, and in such a manner that when the machine or power is running at any ordinary or desired speed there will be no friction between the blocks G and rim D, said springs being coiled around supporting-rods t', which pass through `holes in lugs k upon the support F, and their tension may be -regulated by means of nuts Z upon the screw-threaded ends of the rods.

The bracket E is provided with two elbows, m, near its ends, and extending laterally in opposite directions, for the purpose of holding the regulating springs H, which are coiled around rods n, the inner ends of which are suitably connected to the ends of a sway-bar, I, projecting from a sleeve, o, through which passes the drivingshaft B, the sleeve o being of sufficient diameter to play loosely thereon. To the bracket E, near iits ends, are pivoted the weighted arms K,which have eccentric-allyshaped ends. p trifugal force, will be thrown outward, the ec` centric ends thereof, as shown at p, coming in rIhese arms, by means of cen,-`

ICO

Y`wooden blocks are forced in contact with the inner periphery of the rim D, and sufficient friction is produced to lessen materially the speed of power. Now, to properly regulate this friction, which would otherwise be too great for practical use, the sway-bar I is attached to the weighted arms K, near their eccentric ends, by means of links r, and to the ends ofthe sway-bar, as hereinbefore described, are connected the rods maround which are coiled the springs H. Now, as will be readily seen, the weighted arms K must overcome the resistance caused by the springs H before they can work outward and communicate friction to the rim D hy means of the wooden blocks G, and, in consequence, when the springs are tightened or their coils compressed by the action of the sway-bar it will require a greater centrifugal force to move the weighted arms from their dormant position, and if a higher speed of power is desirable it is obtained by simply tightening or compressing the coils of the spring by means of the nuts s upon the screw-threaded ends of th`e rods n. If, on the contrary, a less speed is desirable, the tension of the springs is loosened in the same manner, the arms moving outward with a less centrifugal force, and the friction thereby will be produced at a slower speed.

The bracket E is preferably provided with lugs t on its outer side for convenience of attaching or assisting in holding the band-wheel C in position on the shaft, and is of greatv advantage in that it enables the governor to be attached to any ordinary tread-power, while if it did not possess this feature it would necessitate the lengthening of the shaft in order to accommodate both the governor and bandwheel.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

,1. In aspeed regulator or governor for treadpowers, a stationary circular rim and abracket attached to the driving-shaft, in combination with frictionblocks and supports therefor, provided with friction rollers, and pivoted weighted arms having eecentrically-formcd ends to bear against said rollers for forcing the friction-block against the inner periphery of the rim, substantially as and for the purpose described.

2. In aspeed regulator or governor for treadpowers, the combination,with a stationary circular rim, of a bracket carrying the operating parts of the regulator or governor, and provided upon its outer side with lugs to assist in holding the band-wheel in position on the shaft, said bracket being attached to said shaft and revolving therewith, substantially as and for the purpose described.

3. In a speed regulator or governor for treadpowers, a bracket attached to thedriving-shaft and provided at its ends with supports and friction-'blocks pivoted thereto, springs and rods, arranged as shown, for controlling the action of the blocks, and friction-rollers connected to the supports, in combination with weighted arms pivoted to the bracket and having eccentrically formed ends, sway bars loosely mounted on the driving-shaft and connected to the arms by links, and regulatingsprings for controlling the action thereof, substantially as and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses. v

@marrer CHRISTIAN SMALLEY.

Wvitnesses:

A. J. RoEFlis, C. T. SMALLEY. 

